Differential's Account Entry bug?

I am using Differential’s Account Entry package. I am trying to set the container class to not use the default classes (i.e. ‘container’ or ‘container-fluid’), but the setting doesn’t seem to be working. Any ideas.

    // Set to false to use an unstyled "accounts-entry-container" class instead of a bootstrap3 "container" or "container-fluid" class.
    useContainer: false,